In April 1949, KPFA in Berkeley, California, went on the air. From the beginning, the station broadcast an utterly new combination of political commentary and cultural discussion, dedicated to creative expression and dissent. In this fascinating account, Jeff Land tells the heroic story of the...

Large Language Models (LLMs) have the potential to profoundly transform and enrich experimental economic research. We propose a new software framework, "alter_ego", which makes it easy to design experiments between LLMs and to integrate LLMs into oTree-based experiments with human subjects. Our...

We study the developmental roots of cooperation in 929 young children, aged 3 to 6. In a unified experimental framework, we examine pre-registered hypotheses about which of three fundamental pillars of human cooperation - direct reciprocity, indirect reciprocity, and third-party punishment -...